c. Open the shore
potable water supply valve
to flush the supply piping for 15-30 seconds
d. Verify that the watercraft and shore facility risers and potable water hoses have been disinfected
and that the shore facility supply piping has been flushed. Connect the potable water hose to the shore
facility riser. The transfer of water from the shore facility to the watercraft may now be initiated.
e. If at any time during the transfer of water/connection procedure, the potable water hose becomes
contaminated, such as through contact with the harbor water, transfer operations shall be stopped and
the hoses disinfected.
Potable Water Hoses/Risers.
a. Hoses shall be labeled "POTABLE WATER ONLY" at 10- foot intervals. Potable water hoses shall
be used to transfer potable water only, and for no other purpose.
b. Hoses shall be kept in good condition at all times, examined routinely, and removed from service if
cracks develop in the lining.
c. Hoses shall be stored with the ends coupled or closed with screw-type caps, in padlocked, vermin-
proof lockers. Lockers shall be labeled "POTABLE WATER HOSE". Lockers shall be located out of
the weather, if practicable, and at least 18 inches off the deck. Printed instructions outlining step-by-
step procedures for the disinfection of potable water hoses shall be posted in a conspicuous location in
the hose storage area.
d. The end coupling of the hoses shall be color coded light blue.
e. Potable water risers shall be labeled "POTABLE WATER" and color coded light blue. All risers
shall be equipped with screw-type caps with keeper chains.
10. Storage Tanks. Although
potable water tanks are constructed
and situated to prevent content
contamination, they may be inner-bottom or skin tanks or they may have a common bulkhead with
ballast tanks, fuel tanks, or other storage spaces. Special attention must be given to monitoring and
maintaining the quality of potable water in these tanks because of susceptibility to contamination.
11. Potable Water Piping.
Special consideration shall
to potable water piping installed
bilge areas, particularly piping on the suction side of potable water pumps. Because this piping is
subject to immersion in bilge water, any leakage will result in contamination. This piping shall be kept
in good, sound, working order. All potable water piping that is normally pressurized shall also be kept
in good working order because the pip ing may occasionally lose pressure, or be under no pressure,
which could allow contaminated water to enter the pipes.